Naked Science Forum
On the Lighter Side => That CAN'T be true! => Topic started by: Richard13 on 08/11/2013 23:05:02
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Hello,
I saw this movie on youtube : "Free energy generator - Make ice cube with microwave oven "
This film shows how it is possible, under certain conditions, to make a microwave oven work in a particular way to generate cold !
Is it really possible to make ice cube with microwave oven ?
Thank you.
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I saw this movie on youtube : "Free energy generator - Make ice cube with microwave oven "
This film shows how it is possible, under certain conditions, to make a microwave oven work in a particular way to generate cold !
Is it really possible to make ice cube with microwave oven ?
No that YouTube video is some sort of joke/scam.
[ the bit about the reversing the plug on an incandescent lamp changing the quality of the light it emits (http://youtu.be/gD9eoN0KX4Y?t=2m45s) is nonsense too ]
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UPDATE ...
apparently that YouTube video was a [dangerous] attempt to teach people to be skeptical about what they see on t'internet ...
This documentary on the microwave oven is a scientific fraud.
It was designed to show that experiments performed in a specialized laboratory, with the scientific support of a physician in a white coat, are not absolutely guarantee a reliable and serious scientific message.
All the facts and concepts presented in the documentary are false and not based on valid scientific theory or experience.
The sinusoidal AC 50 Hz power grid is obviously not polarized.
A microwave oven can not produce cold when the power cord is plugged in backwards.
http://translate.google.com/translate?hl=en&ie=UTF8&prev=_t&sl=fr&tl=en&u=http://physafilm.com/
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I like this.
Total BS.
But funny nonetheless.
What the heck is Frenel Fluid?
See earlier discussions of cooling microwaves (http://www.thenakedscientists.com/forum/index.php?topic=46441.0) on TNS.
Anyway, your "mains power" is AC. That means that each lead alternates between positive and negative at 50 or 60 cycles a second. The difference in the sine/cosine waves is simply adjusting temporal starting point by 1/4 cycle, or either 1/200th or 1/240th of a second.
Oops, they showed a +sine wave and a -sine wave, or a 180° phase shift which would correspond to a 1/100th or 1/120th of a second delay.
In the USA, the "Polarity" of the power cords is with respect to ground. So, at the breaker box, the "Neutral" and the "Ground" are tied together. That means that in general, if you touch the neutral wire and are grounded, then you won't get shocked (assuming everything is wired correctly, which isn't always the case).
However, once you apply a load, you have a circuit from the "Hot" to the "Neutral". Say you have a 10A load, then you actually would have 10A of current flow through the "Neutral", and it may in fact not be truly at "Ground". If you leave the "hot" plugged in, disconnect the neutral, and connect an ammeter between the old neutral and the ground, then you have all 10A flowing through your ammeter to the ground.
The electronic circuits of your device should be isolated from the ground, so the polarity really shouldn't make a difference. The ground, however, might be handy if you have an older tool that has an internal short somewhere, or perhaps a device that might be exposed to water, and could short out.
Anyway, sorry, you can't simply plug your microwave in backwards and suddenly generate unlimited power. With the exception of grounding the case of your microwave, there really is no difference between the polarities.
Why the heck does the USA like polarized 2-wire plugs?
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I like this.
Total BS.
But funny nonetheless.
IMO it's dangerous rather than funny : the point they are trying to make is that some people will be fooled by professional presentation and 10 dollar words, which is true. So odds are someone will try to replicate the experiments shown, despite the warnings not to, and could electrocute themselves in the process. They should have come up with a bogus experiment which wouldn't be dangerous if someone copied what was shown in the video.
What the heck is Frenel Fluid?
Why leek soup of course ...
12 - The fluid Fresnel high hysteresis loop does not exist. The liquid used is only a leek soup.
http://translate.google.com/translate?hl=en&ie=UTF8&prev=_t&sl=fr&tl=en&u=http://physafilm.com/
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IMO it's dangerous rather than funny : the point they are trying to make is that some people will be fooled by professional presentation and 10 dollar words, which is true. So odds are someone will try to replicate the experiments shown, despite the warnings not to, and could electrocute themselves in the process. They should have come up with a bogus experiment which wouldn't be dangerous if someone copied what was shown in the video.
This is isn't building a matter/antimatter intermix chamber for your warp drive (which should be safe enough anyway since the global production capacity of antimatter consists of a handful of anti-atoms).
The experiment is simply making an extension cord.
The big thing is to realize one has been bamboozled before taking the microwave apart and tinkering with the transformer and internal parts.
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The experiment is simply making an extension cord.
They shouldn't have used a bogus experiment which involved swapping the positions of wires in a mains electricity plug :
if someone swaps the earth (ground) and live wires in a mains plug the metal case of the appliance will become live [xx(]
I suppose when someone* is electrocuted by attempting to follow their video they can say : "this is proof we were right : naive people exist who are taken-in by fraudulent videos on YouTube ".
[ * could be a youngster : the video is not age restricted ]
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Another "cracker" from the people who brought you "make ice in the microwave" ...
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Perhaps I should be thankful that I understand very little French.
Apparently there was an ignobel prize proving that knuckle popping or cracking does not cause arthritis. (http://www.livescience.com/9729-knuckle-cracking-ig-nobel-prize.html)
There is debate about cervical spine manipulations and popping. However, certainly if a person had a fracture, then it should be treated with care.
For whiplash patients without fractures, some evidence is indicating that the soft donut collars and neck immobilization may actually be more harmful than beneficial (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2684205/). And, many physicians are recommending active exercises (although, perhaps not vigorous neck popping).
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Another "cracker" from the people who brought you "make ice in the microwave" ...
This is a hoax too ;-)